The Chord Electronics Alto is a professional-grade headphone and speaker amplifier built on the same ULTIMA dual feed-forward topology found in Chord's reference power amplifiers. It delivers 50 watts per channel into speakers and over 2 watts into headphones from a chassis small enough to rack-mount, bridging the gap between studio monitoring and critical home listening. Key Features ULTIMA dual feed-forward error correction for vanishingly low distortion across the full output range Four headphone outputs: 3.5mm, 4.4mm Pentaconn balanced, and two 6.35mm jacks Speaker outputs via 4mm banana terminals, 50W into 4 ohms XLR and RCA inputs with balanced XLR preamp outputs for daisy-chaining or active monitors Proprietary high-frequency switch-mode power supply (external 12V DC, 4-pin locking connector) Auto-switching 80-250V operation for worldwide use without modification 1U rack height (215 x 200 x 57mm), under 2kg, designed for studio and desktop use Why We Carry Chord Electronics Chord Electronics has been doing digital conversion differently since 1989. While every other manufacturer buys off-the-shelf DAC chips, Rob Watts designs custom FPGA algorithms with tap lengths that dwarf anything from ESS or AKM. Their proprietary Pulse Array technology, MOSFET amplification stages, and high-frequency switch-mode power supplies are all designed and built in Kent, England. From the portable Mojo 2 to the flagship DAVE, every product runs code that Chord wrote themselves. ULTIMA Topology in a Compact Package The Alto borrows directly from Chord's ULTIMA power amplifier architecture, specifically the dual feed-forward error correction circuit that defines their flagship mono blocks. Where the Anni uses a similar topology at lower power for the Qutest range, the Alto scales that circuit to professional output levels. In most amplifier designs, feedback is applied after the output stage to reduce distortion. Chord's approach applies correction at two separate points in the signal path, catching errors that traditional single-loop designs miss. The result is measurably lower distortion at real-world power levels, not just on a test bench at 1 watt. Headphone Outputs for Every Connector Four headphone jacks cover every standard in professional and consumer use. The 4.4mm Pentaconn balanced output handles high-end planar magnetic headphones that benefit from balanced drive. The two 6.35mm outputs serve studio cans and most high-impedance dynamic headphones. The 3.5mm jack works with IEMs and portable headphones without an adapter. At 2,250mW into 100 ohms from the balanced output, the Alto has enough current to drive demanding loads that choke lesser desktop amps. Alto as a Speaker Amplifier This is not a headphone amp with speaker taps bolted on as an afterthought. The Alto delivers a genuine 50 watts per channel into 4 ohms through 4mm banana binding posts, enough to drive efficient bookshelf speakers or nearfield studio monitors to serious levels in a desktop or small room setup. The ULTIMA topology maintains its grip and control at speaker-level power, making this a legitimate integrated solution for anyone running both headphones and speakers from the same source. Preamp and System Integration Balanced XLR inputs accept signal from any professional DAC or source component, including the Hugo TT2 or Qutest. RCA inputs accommodate consumer-level gear. The XLR preamp outputs let you feed active studio monitors or a separate power amplifier, turning the Alto into a preamp/headphone amp in a larger system. Volume control is handled by a front-panel rotary with illuminated input and output status orbs, following Chord's signature design language. Power Supply Design The Alto uses an external 12V DC power supply with a locking 4-pin connector, keeping electrical noise out of the audio chassis entirely. The PSU auto-switches between 80V and 250V AC input, so the unit works anywhere in the world without a transformer or voltage adapter. At under 2kg for the amplifier and a small footprint (215 x 200 x 57mm), the Alto is designed to travel between studios or sit permanently on a desktop without dominating the workspace. The Listening Room Difference We're a third-generation family business with a brick-and-mortar showroom in Chestertown, Maryland, and a reputation built on exceptional service and relentless passion for hifi. Whether you're visiting in person or ordering online, we bring decades of experience, personalized service, and honest guidance to every interaction. We don't just ship boxes. We help build systems, answer your questions like real humans, and make sure every detail of your setup is right, from the cables to the final connection. Our passion is helping you get the most out of your gear, with support that lasts well beyond the sale.Chord Electronics Alto Specifications Specification Detail Amplifier Type Professional Headphone & Speaker Amplifier Amplifier Topology ULTIMA dual feed-forward error correction Speaker Power 50W per channel into 4 ohms Headphone Power (Balanced) 2,250mW into 100 ohms (4.4mm) Headphone Outputs 3.5mm, 4.4mm Pentaconn balanced, 2x 6.35mm Speaker Outputs 4mm banana binding posts Inputs 1x XLR balanced, 1x RCA Preamp Outputs 1x XLR balanced Power Supply External 12V DC, 4-pin locking connector Mains Voltage 80-250V AC auto-switching Dimensions 215 x 200 x 57mm (W x D x H) Weight ~2kg Finish Black Designed & Built Kent, England
